Cress Heads Lesson Plan

Instructor: John Hamilton

John has tutored algebra and SAT Prep and has a B.A. degree with a major in psychology and a minor in mathematics from Christopher Newport University.

This lesson plan will teach your students about cress heads. They will also participate in an exciting hands-on activity in which they will actually make their own cress heads with eggs.

Learning Objectives

After studying this lesson on cress heads, your students will be able to:

  • Differentiate how cress grows with sunlight and without it
  • Explain what cress is and what people commonly do with it
  • Make their own cress heads with eggs

Length

1 - 1.5 Hours

Materials

  • Acrylic paints
  • Cotton wool balls
  • Cress seeds
  • Felt-tip pens
  • Internet access
  • Raw eggs
  • Teaspoons

Key Vocabulary

  • Cabbage
  • Germination
  • Mustard family
  • Piquant
  • Pungent
  • Radish

Curriculum Standards

2-LS2-1. Plan and conduct an investigation to determine if plants need sunlight and water to grow. Assessment Boundary: Assessment is limited to testing one variable at a time.

2-LS4-1. Make observations of plants and animals to compare the diversity of life in different habitats. Clarification Statement: Emphasis is on the diversity of living things in each of a variety of different habitats. Assessment Boundary: Assessment does not include specific animal and plant names in specific habitats.

Instructions and Activity

Instructions

  • Let your students know they will be learning about cress and cress heads.
  • Ask them if anyone is familiar with cress, or has ever made cress heads previously.
  • Review the key vocabulary terms.

Activity

Part A

  • Inform your students they are going to be making their very own cress heads!
  • Divide students into pairs.
  • Pass out the necessary material to your students.
  • Tell your students the following:

1) Gently remove the top portion of your raw eggs (about one-third from the top.)

2) Tip over your eggs to remove the inside whites and yolks.

3) Rinse out the inside of your eggs, being extremely careful not to break them.

4) Use your acrylic paint or felt-tip pens to create your own unique designs on your eggs. Be careful not to press too hard and damage the eggshells.

5) Allow the eggs to sit for about ten to fifteen minutes to dry out properly.

  • In the meantime, you can have a discussion group with your students:

Part B

  • Explain to your students you will be having a discussion group about cress.
  • Arrange your students in a semi-circle while you speak to them.
  • Find an internet source that offers facts and information on cress to read to the class.
  • After reading about cress, ask some questions to check for understanding. Below are some example questions to ask.

a) What exactly is cress or garden cress? (a plant related to cabbage, mustard, and radish)

b) How long does it take cress to germinate? (just a day or two)

c) When is cress mature and ready to be eaten? (just five to seven days)

d) How tall will the plants be then? (an inch or two)

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